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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Giarolla,Angelica (2) Marinho,Mara de Andrade (2) Medeiros,Grasiela de Oliveira Rodrigues (2) Sampaio,Gilvan (2) Palavra-chave GIS (2) USLE (2) Erosion (1) Geoprocessing (1) Soil conservation (1) Soil erosion modeling (1) Soil loss rates (1) Soil loss tolerance (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Diagnosis of the Accelerated Soil Erosion in São Paulo State (Brazil) by the Soil Lifetime Index Methodology Rev. Bras. Ciênc. Solo Medeiros,Grasiela de Oliveira Rodrigues; Giarolla,Angelica; Sampaio,Gilvan; Marinho,Mara de Andrade. ABSTRACT: The soil is a key component of the Earth System, and is currently under high pressure, due to the increasing global demands for food, energy and fiber. Moreover, the management of agricultural systems is often inadequate and ignores the agricultural suitability of lands, and particularly the vulnerability of soils. This paper demonstrates the application of the concept of the Soil Lifetime Index (SLtI) for the entire state of São Paulo, at a spatial resolution of 30 m. The SLtI methodology represents a tolerance criterion and a diagnostic tool to assess the level of soil degradation by water erosion, based on estimated soil loss rates and on an average soil renewal rate. Two approaches were applied to determine: i) the remaining time (years)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil erosion modeling; Soil loss rates; Soil loss tolerance; USLE; GIS. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100552 Estimates of Annual Soil Loss Rates in the State of São Paulo, Brazil Rev. Bras. Ciênc. Solo Medeiros,Grasiela de Oliveira Rodrigues; Giarolla,Angelica; Sampaio,Gilvan; Marinho,Mara de Andrade. ABSTRACT: Soil is a natural resource that has been affected by human pressures beyond its renewal capacity. For this reason, large agricultural areas that were productive have been abandoned due to soil degradation, mainly caused by the erosion process. The objective of this study was to apply the Universal Soil Loss Equation to generate more recent estimates of soil loss rates for the state of São Paulo using a database with information from medium resolution (30 m). The results showed that many areas of the state have high (critical) levels of soil degradation due to the predominance of consolidated human activities, especially in growing sugarcane and pasture use. The average estimated rate of soil loss is 30 Mg ha-1 yr-1 and 59 % of the area of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Erosion; USLE; Soil conservation; GIS; Geoprocessing. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100551 Registros recuperados: 2 Primeira ... 1 ... Última

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